Bangkok is the capital and most populous city of the Kingdom of Thailand. It is known in Thai as Krung Thep Maha Nakhon (About this sound listen)) or simply Krung Thep (About this sound listen. The city occupies 1,568.7 square kilometres (605.7 sq mi) in the Chao Phraya River delta in Central Thailand, and has a population of over 8 million, or 12.6 percent of the country's population. Over 14 million people (22.2 percent) lived within the surrounding Bangkok Metropolitan Region at the 2010 census, making Bangkok an extreme primate city, significantly dwarfing Thailand's other urban centres in terms of importance. The Asian investment boom in the 1980s and 1990s led many multinational corporations to locate their regional headquarters in Bangkok. The city is now a major regional force in finance and business. It is an international hub for transport and health care, and has emerged as a regional centre for the arts, fashion and entertainment. The city is well known for its vibrant street life and cultural landmarks, as well as its notorious red-light districts. The historic Grand Palace and Buddhist temples including Wat Arun and Wat Pho stand in contrast with other tourist attractions such as the nightlife scenes of Khaosan Road and Patpong. Bangkok is among the world's top tourist destinations. It is named the most visited city in MasterCard's Global Destination Cities Index, and was named "World's Best City" for four consecutive years by Travel + Leisure magazine.